Check out some of the latest MakeUseOf discoveries. All listed websites are FREE (or come with a decent free account option). No trials or buy-to-use craplets. For more cool websites and web app reviews subscribe to MakeUseOf Directory.

(1) FreeMyPDF – Next time you need to unlock restricted PDF file that prevents you from copying, editing or printing the contents then FreeMyPDF can help. It is a simple online utility where you can upload a PDF file and quickly remove its restrictions. Read more: FreeMyPDF – Unlock Restricted PDF Files

(2) NatGeo Wallpapers – If the various wallpaper sites on the net can’t satiate your desire for that perfect wallpaper then you should take a look at National Geographic’s (or Nat Geo’s) photography section. There is a section dedicated to wallpapers that boasts of a collection of some amazing photographs that could be downloaded to your computer and set as the background. Read more: NatGeo Wallpapers – Download Awesome Wallpapers

(4) ORB – Project managers trying to grab a meeting room at the last minute isn’t an unusual scene in a big firm. With many employees working on various projects, the limited availability of meeting rooms in the company poses a problem. ORB is an online meeting room manager that offers a simple booking and management solution for meeting rooms so that managers can make the best use of available rooms. Read more: ORB – Online Meeting Room Manager

These are just half of the websites that we discovered in the last couple of days. If you want us to send you daily round-ups of all cool websites we come across, leave your email here. Or follow us via RSS feed.